| 摘要 |
<p>The disclosed variable-load valve (21) is provided with a first diaphragm member (41), a second diaphragm member (42), a piston (40), a force-transmission member (43), and a diaphragm-affixing member (45). The first diaphragm member (41) deflects due to the pressure inside a pilot chamber into which air is introduced at a pressure corresponding to a vehicle weight. The second diaphragm member (42) deflects due to the pressure inside an output chamber for outputting a load-compensating pressure. The piston (40) generates the load-compensating pressure by moving axially in accordance with the deflection of the first and second diaphragm members (41 and 42). The force-transmission member (43) comprises: a pressure-receiving part (43b) which has a pressure-receiving surface (43d) that is subjected to a pressing force due to the deflection of the second diaphragm member (42); and an extension part (43c) which extends radially from a fixed part (43a). The force-transmission member transmits, to the piston (40), a force in accordance with the pressing force that the pressure-receiving surface (43d) is subjected to from the second diaphragm member (42). The diaphragm-affixing member (45) is formed separately from a block (25), affixes the periphery of the second diaphragm member (42) to said block (25), and sets the surface area of the pressure-receiving surface (43d) of the force-transmission member (43).</p> |
